When Wang Xianchao heard this, his face turned blue for a while, and purple for a while. I want to say something, but I don't know what to say.

Gu Xu was very calm and sneered: "Hehe, what's the matter, I can't speak!" ”

With just your trick, I can't play with you, I'm living in vain!

Wang Xianchao thought for a while: "Then why didn't you say it!" ”

Gu Xu disdainfully: "I said it, but you didn't hear it." ”

"When did you say that!" Wang Xianchao was puzzled, "Why didn't I hear it!" ”

"I'm going to report to you? You have to hear it to count? ”

Wang Xianchao's anger came up instantly: "Not only did I not hear it, but Teacher Zhang definitely didn't hear it either." If you don't believe me, ask Mr. Zhang. ”

"It's normal that Teacher Zhang didn't hear it, she was so far away from me. Besides, she didn't ask me specifically, she asked all her classmates, and it was normal for her to not hear them. ”

Wang Xianchao still wanted to say something, but he didn't feel that he knew what to say.

Gu Xu sneered disdainfully: "Are you because I said I understood, you are unhappy!" I understand, it's just a small probability event, you don't have to be ashamed if you don't understand, such a question is to have the imagination of multi-dimensional space, maybe your imagination ......"

"What do you mean!" Wang Xianchao's face was full of anger.

"I'm not interesting!" Gu Xu said coldly.

Zhang Song turned his head and glanced at Wang Xianchao, and sneered: "Stupid! I can't even hear such simple words, how did you get the second test! Confused! ”

Gu Xu also smiled, Zhang Song's level of scaring people has improved a lot now.

Wang Xianchao subconsciously narrowed his eyes, and Gu Xu and Zhang Song taunted him at the same time.

He was even more unconvinced, full of anger.

"Teacher Zhang!" Wang Xianchao suddenly said loudly, "Gu Xu said that he understood and was willing to tell everyone about this question, he said, his thinking is better than yours." ”

Lan Ruosi looked unhappy: "When did Gu Xu say it, why don't I know!" ”

She hurriedly said loudly: "Teacher, Gu Xu didn't say it, it was Wang Xianchao himself." ”

A warm current welled up in Gu Xu's heart, and at this time, the little daughter-in-law would take the initiative to stand up and speak for her.

Wang Xianchao smiled coldly: "Classmate Lan, your words are obviously favoring Gu Xu. ”

"I didn't!" Lan Ruosi emphasized, "It's you talking nonsense. ”

Wang Xianchao looked at Gu Xu: "Gu Xu said it yourself just now, you understand!" ”

Gu Xu answered: "Yes, I said it, I understand!" How! ”

What Wang Xianchao said doesn't count, and what Lan Ruosi said doesn't count.

When Zhang Xiaoli heard Gu Xu admit it in person, she was shocked, Gu Xu actually understood!

Wang Xianchao continued: "It was you who told Lan Ruosi just now, your thinking may be better than hers!" ”

"That's right! I said that. Gu Xu did not deny it.

Wang Xianchao said in a weird way: "Then Lan Ruosi's thinking is the teacher's thinking, you just said that your thinking is better than hers, isn't it that your thinking is better than the teacher?" ”

"Huh!" Gu Xu smiled lightly, "What a quote out of context." ”

Zhang Xiaoli was even more surprised when she heard it: Gu Xu actually had other ideas?

"Gu Xu, since you understand, let's come up and tell the classmates how to do it!" Zhang Xiaoli said.

She really wanted to see what Gu Xu was thinking.

Gu Xu's academic performance has improved a lot recently, and he has won the first place in the whole grade in Chinese composition, maybe he really has other ideas.

If he really understands and has other ideas, it can really be said that it is a dark horse.

"Okay!" Gu Xu agreed, and looked at Wang Xianchao at the same time.

"Teacher Zhang, Wang Xianchao said that he will too, his thinking is better than mine!" Gu Xu also hurriedly said.

Hehe!

Such a person must not be soft!

Who hasn't watched "Dragon Babu".

Murong Fu's way of giving back to the other, do you think you will?

You're playing yin for me? Won't I play yin for you?

Zhang Xiaoli was shocked: "Wang Xianchao also made it?" ”

She was instantly overjoyed: "I originally thought that such a problem might not be solved by one classmate, but now there are two classmates." Come on, come on, come up and do it. ”

Wang Xianchao's expression was embarrassed: "Teacher, what do you do if there is no blackboard here?" ”

He couldn't say no, he couldn't stop doing it, and then found another reason.

Zhang Xiaoli said: "It's okay! There is a projection screen here, you and Gu Xu take a piece of paper and do it below, and I will project the screen for you, so that everyone can see it. When you're done, I'll tell you. ”

The more she talked, the more excited she became, and she really wanted to see what the students were doing.

Gu Xu agreed: "Okay, this method is very good!" Teacher, you can arrange it! ”

Zhang Xiaoli asked Gu Xu and Wang Xianchao to come up, this kind of stepped classroom, the podium is also very large, and it is more than enough for two people to go up. Gu Xu sat on the left side of the podium, Wang Xianchao sat on the right, and Zhang Xiaoli sat in the middle.

Gu Xu took the paper and drew two parallel lines on it......

Wang Xianchao looked at the projection with a pen, Zhang Xiaoli's drawing was very complicated, and he couldn't tell which line it was from scratch, so he had to try his best to imitate it.

The people present looked at them and talked about it.

"Gu Xu draws the line very clearly."

"I don't know what Wang Xianchao is painting."

"Gu Xu's picture seems to be different from the teacher."

Zhang Xiaoli looked at the two of them's ideas, Gu Xu was very clear, and it seemed that he had grasped the core.

Wang Xianchao would paint here and there, and Zhang Xiaoli could see that he was imitating himself, but the more he painted, the more blurred he became.

"Teacher, I'm done!" Gu Xu said.

Zhang Xiaoli said: "Then you tell everyone about it!" ”

Gu Xu nodded: "When we do this kind of problem, we must remember the initial conditions clearly, and we can't see the first projection and the Nth projection on the screen."

Because, we just live in three-dimensional space.

After many projections, maybe this geometry is not the one we know. After each projection, we have to remember it clearly, and then, after many mappings, we expand outward again and again. ”

Lan Ruosi blurted out: "I understand! ”

After Gu Xu said this, she completely understood, it turned out that the extension was not once, but many times.

Zhang Xiaoli nodded, she looked at Wang Xianchao: "Wang Xianchao, if you can't do it, go down first!" ”

"Teacher, I can!" Wang Xianchao was not convinced.

"Then tell me how you did it!" Zhang Xiaoli said.

"I ......," Wang Xianchao hesitated for a moment, "I need to think again." ”

Gu Xu sneered: "You can't do it, why waste other people's time." ”

Wang Xianchao retorted: "Do you think that someone understands what you just said?" It's just a few random nonsense, who wouldn't. ”

Wang Xianchao said and looked at everyone: "Do you understand?" ”

The crowd shook their heads.

Lan Ruosi answered: "I understand!" ”

"Do you understand?" Wang Xianchao shot back.

"Why doesn't she understand?" Gu Xu asked rhetorically.

"She's on good terms with you, maybe she said it on purpose."

"You talk nonsense, I understand!" Lan Ruosi retorted.

Wang Xianchao said: "Unless, you can make more than 80% of the people in the class understand, that is, you really understand." ”

Zhang Xiaoli "chuckled" in her heart, she didn't dare to guarantee that 80% of people would understand.

"Why should I prove to you that I understand?" Gu Xu asked rhetorically.

"Because you're talking nonsense."

Zhang Xiaoli interjected: "Gu Xu, I think you really understand, you can analyze your experience for everyone." Wang Xianchao, go back first! ”